Andy Walls wrote: > On Sat, 2008-05-03 at 18:07 -0400, JP Fournier wrote: >> Hi All, >> >> I recently upgraded my OS (slackware 12.1) + mythtv (0.21 SVN). I have >> a pvr250 which is detected first, and a pvr 500. As long as I only >> access the pvr250 everything is fine. As soon as I try to use the 500, >> (record 2 things at once, use PIP in myth) I get about 2 seconds of >> video from the pvr500 followed by a spontaneous reboot. > > Was this behavior observed before the OS upgrade?
On my ancient previous OS (slackware 10.1) + ivtv driver (0.9?) this was working. Since then, however, the primary HD died and has been replaced. I also pulled out a NIC card and have been using the onboard nic. This reboot characteristic has been consistent since I've started using slackare 12.1 RC1 (and now with the real 12.1). > > >> Are there any known issues with a pvr250 + 500 in the same box? > > I do not know. > >> Any >> ideas on how to debug this further? >> >> Any thoughts appreciated. > > A PCI bus error SERR (or maybe PERR too) can cause an NMI to be > generated. I don't know what Linux normally does in response to an NMI, > but I would think something would get written to /var/log/messages. Is > there anything there? I just tried it again, tailing /var/log/messages. Nothing in the logs when it happens. > > A flaky PCI chipset or strange PCI interaction can cause the system to > reboot, since the Northbridge is in charge of the memory and memory > region mappings (e.g ROM shadows) and the Southbridge is in charge of a > lot of the legacy PC IO devices. > > If you can dig up the errata sheets for the VT8377 Northbridge, VT8235 > Southbridge, and Hint Corp HB6 PCI-PCI bridge, you may find the > conditions under which a hang or reboot could occur. > > >> regards >> >> jp >> >> [EMAIL PROTECTED]:/var/log# lspci -v >> 00:00.0 Host bridge: VIA Technologies, Inc. VT8377 [KT400/KT600 AGP] >> Host Bridge (rev 80) >> Subsystem: Giga-byte Technology GA-7VAX Mainboard >> Flags: bus master, 66MHz, medium devsel, latency 8 >> Memory at c0000000 (32-bit, prefetchable) [size=128M] >> Capabilities: [80] AGP version 3.5 >> Capabilities: [c0] Power Management version 2 >> Kernel driver in use: agpgart-via >> Kernel modules: via-agp > > A latency timer of 8 seems low. Your host bridge can only transfer > (8-2)*4 = 24 bytes at a time as a master, if running at 33 MHz. > > You might try increasing it to 16 or 32 using setpci. I tried this, but it didn't seem to help; it still crashes after a few seconds. >> > > I also notice that your HD-5500 card and PVR-250 card are on the main > PCI bus Segment 0, but that the PVR-500 is on bus segment 2 behind the > Hint Corp bridge. You could try moving the PVR-250 over to bus segment > 2 or the PVR-500 over to bus segment 0, to see if things are better when > they're on the same bus segment. Thanks. I'll give that a try. jp > > > Regards, > Andy > > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users > _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
